gdt

gdt::gdt(const tss& _tss) : tss_entry(_tss) {
    entries[Null] = gdt_entry{};

    entries[Kernel_Code] = {
        Present | Segment | Read_Write | Executable,
        Long_Mode,
    };

    entries[Kernel_Data] = {
        Present | Segment | Read_Write,
        0,
    };

    entries[User_Data] = {
        Present | Segment | Read_Write | User,
        0,
    };

    entries[User_Code] = {
        Present | Segment | Read_Write | Executable | User,
        Long_Mode,
    };
}

void init() {
    tss _tss = {};
    gdt _gdt = {_tss};
    gdt_descriptor descriptor = {_gdt};

    descriptor.load();
    tss_update();

    for (size_t i = 0; i < gdt::Length - 1; i++) {
        log::debug.print("GDT[%lu]: 0x%016lX", i, (_gdt.entries[i]));
    }

    log::debug.print("GDT[TSS]: 0x%016lX", _gdt.tss_entry);

    log::info.print("GDT Initialization - Success");
}